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Old 01-17-2013, 10:07 PM   #51
05_wRex
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Quote:
Originally Posted by pet3r View Post
With my Dom1.5 I was at 27 at 6500 and 26psi
I must be super safe with 13.2 at 7k @ 27 psi on race gas. I guess I should verify actual vs indicated timing. Lol.
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Old 01-17-2013, 10:08 PM   #52
pet3r
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Lol I'd say thats safe for sure I don't think any of my cars/tunes every went below 19
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Old 01-17-2013, 10:13 PM   #53
Slimsti
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Yeah that's safe especially on e. Staying under 20 on pump is safe but still I'd run atleast 22
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Old 01-17-2013, 10:18 PM   #54
05_wRex
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Quote:
Originally Posted by pet3r View Post
Lol I'd say thats safe for sure I don't think any of my cars/tunes every went below 19
Nice ride BTW. Wasn't trying to trash your thread or anything. Lol. Not many people will reveal their timing numbers.

Mine made 542/441 with that timing. I suppose my torque would shoot up with that much more timing though.
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Old 01-17-2013, 10:32 PM   #55
punchjamesarnol
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Nice tune!
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Old 01-18-2013, 12:21 AM   #56
Phatron
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Quote:
Originally Posted by PerformanceAutoSolutions View Post
how did you not run out of fuel? with those 1400cc inj..

dave
On the same fuel pump on the stock regulator and stock wiring the fuel was done at 20psi....100% IDC.

After the rewire and 43psi base it was still not up to par.

Now with the base at 55psi the IDC is 85%.....they're now basically flowing like a 1600cc.
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Old 01-18-2013, 12:29 AM   #57
rexblake
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That thing is beastly! Loving the power band. Congrats on the new found power.
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Old 01-18-2013, 02:27 AM   #58
Wagz87subi
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Quote:
Originally Posted by pet3r View Post
This car has been a work in progress for quite a while now, and it feels good to be just about finished with the tune. There might be minor tweaks, but its about as fast as she's gonna get for now.

Details can be found on my online journal - www.pet3r.com

Location: Arizona
Dyno: Virtual Dyno
Temp: ~45 degrees
Elevation: ~2900
Tuner: Phatron (Phatbotti)
Car: 2008 STi, GTX3076R .82a/r
Target boost: 28psi
Target AFR: 11.6
Hp: 553whp
Tq: 527wtq
Fuel: E85
Vehicle Weight: 3350 + 220 (passenger)

Engine:
• Rallispec Street Block EJ25 (Crawford pistons, Subaru nitrided crank, Manley H-beam rods, upgraded main and rod bearings)
• ARP Head Studs
• KillerBee Oil Pickup
• Stock location intake manifold
• TiC Motive Autowerks Composite TGV Deletes
• Crawford Air/Oil Seperator
• Torque Solution Air Pump Delete
• Omni 4bar MAP sensor
• Gates Racing Timing Belt

Intake:
• Spearco TMIC
• P&L Rotated Cold-air intake, with TMIC connection
• Turbosmart Kompact BPV
• Garret GTX3076R w/ .82A/R
• Grimmspeed 3-port EBCS
• K&N Filter

Exhaust:
• P&L Rotated Turbo Kit
–up-pipe with Tial 44mm EWG, ported back to downpipe
–custom downpipe
–coated with LO-KO heat coatings
• Stock Catback + Muffler

Fuel:
• Five-O custom 1400cc Top-feed injectors
• Perrin Top-feed Fuel Rails
• Walbro E85 450lph pump (in OEM fuel basket, direct wire to battery)
• AEM Fuel Pressure Regulator @ 55psi

I can't recommend Phatron highly enough. I'm just blown away by his tune, his quick service and expertise. Phatbotti FTW!!!

Virtual Dyno

Just for fun...50-100 for xluben

50-100 = 4.33s (with no flat foot shift)

Also, for comparison against my last turbo, Dom1.5xtr 10cm. The Dom1.5 setup dynod at 400whp on a lowish Mustang dyno.
Given these specs, just curious what the mpg is for a modded Sti like this??
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Old 01-18-2013, 09:42 AM   #59
Equilibrium Tuning
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Quote:
Originally Posted by KurtP View Post
ATP turbos seem to be nice in concept on stock location, but seem to get crushed power and spool up wise by rotated units from perrin etc.
I would tend to agree with you with the older GT series, but the new ATP GTX turbos seem to perform right in line with their rotates counterparts. Check out this ATP GTX3076 we did http://forums.nasioc.com/forums/show....php?t=2450970. That was only at 23-24psi because we ran out of fuel, but still made very similar power. Spool is also very close even though ours is on a big FMIC.

-- Ed
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Old 01-18-2013, 09:58 AM   #60
KurtP
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interesting. seems to spool 500ish rpms later than this rotated unit...is that just because the run started a little later? what size exhaust housing do you suggest? how does it do with iwg vs ewg?
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Old 01-18-2013, 11:00 AM   #61
Equilibrium Tuning
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Quote:
Originally Posted by KurtP View Post
interesting. seems to spool 500ish rpms later than this rotated unit...is that just because the run started a little later? what size exhaust housing do you suggest? how does it do with iwg vs ewg?
I'll dig up the boost plot later, but it actually spools very similarly. The slightly later peak torque is from the giant FMIC versus the TMIC on the rotated car. Also, everything spools slower on the dyno than on the road.

The ATP turbos come with only one exhaust housing. IIRC it's roughly 9cm. Most of the ones I've done we're on EWG.

-- Ed
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Old 01-18-2013, 11:58 AM   #62
kellygnsd
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Quote:
Originally Posted by Equilibrium Tuning View Post
I'll dig up the boost plot later, but it actually spools very similarly. The slightly later peak torque is from the giant FMIC versus the TMIC on the rotated car. Also, everything spools slower on the dyno than on the road.

The ATP turbos come with only one exhaust housing. IIRC it's roughly 9cm. Most of the ones I've done we're on EWG.

-- Ed
ATP says its around .73 A/R. Not sure what that equals in cm designation.
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Old 01-18-2013, 12:00 PM   #63
Zee Biker
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Quote:
Originally Posted by kellygnsd View Post
ATP says its around .73 A/R. Not sure what that equals in cm designation.
http://www.cumminsforum.com/forum/89...zes-cm-ar.html
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Old 01-18-2013, 12:12 PM   #64
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Why does everything spool slower on the dyno than the road? Can you not adjust the loading on the dyno? I don't get the benefit of playing with dynos so I don't know all the ins and outs but I thought that was an advantage of a dyno is to be able to hold set speeds and measure power changes and also to vary the loading.
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Old 01-18-2013, 12:19 PM   #65
kellygnsd
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Originally Posted by kakarot09 View Post
Why does everything spool slower on the dyno than the road? Can you not adjust the loading on the dyno? I don't get the benefit of playing with dynos so I don't know all the ins and outs but I thought that was an advantage of a dyno is to be able to hold set speeds and measure power changes and also to vary the loading.
You can make a car spool faster on the dyno than the street with a load control dyno and the right ramp rates it you wanted to. The point is the dyno doesn't replicate the real world. In the real world load does not come on linearly like it does on the dyno, wind resistance probably has an effect to but some dynos factor that in but its still just an estimated calculation.

EDIT: not all dynos are load control dynos either. Dynojets and some others are inertial dynos, some have electric power absorbers, eddy current brakes, etc... lots of variables
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Old 01-18-2013, 03:55 PM   #66
07wrx84
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This car is nuts lol!
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Old 01-18-2013, 04:25 PM   #67
achavez
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Nice pictures! Even nicer build/setup/powerband
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Old 01-18-2013, 04:35 PM   #68
WRXt4cy
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Quote:
Originally Posted by pet3r View Post
With my Dom1.5 I was at 27 at 6500 and 26psi
This should be pretty close to MBT timing based on my results from dyno tuning some similar sized turbos on the EJ257.

How long the will engine hold up at this amount of timing is another issue though.
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Old 01-18-2013, 04:44 PM   #69
juanmedina
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Quote:
Originally Posted by WRXt4cy View Post
This should be pretty close to MBT timing based on my results from dyno tuning some similar sized turbos on the EJ257.

How long the will engine hold up at this amount of timing is another issue though.
Ron had me running 30-33* with my VF39 for a while. Then I run 26* daily and 30* at redline on my race map with My FP Green. That short block lasted 65k miles on the same bearings and rods, when I took it apart only one of the bearings was a little beat up. I trapped 121mph with VF39 and run 7.3 in 1/8th of the mile with the green with that same engine.

OP I am surprise you are running such low timing because Ron has advice me to crank it up a little bit. I am running about the same timing and I don't think I will have issues and gain power if I decide to crank it up to about 26*.

I love your dynosheet
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Old 01-18-2013, 04:51 PM   #70
WRXt4cy
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Originally Posted by juanmedina View Post
Ron had me running 30-33* with my VF39 for a while. Then I run 26* daily and 30* at redline on my race map with My FP Green. That short block lasted 65k miles on the same bearings and rods, when I took it apart only one of the bearings was a little beat up. I trapped 121mph with VF39 and run 7.3 in 1/8th of the mile with the green with that same engine.

OP I am surprise you are running such low timing because Ron has advice me to crank it up a little bit. I am running about the same timing and I don't think I will have issues and gain power if I decide to crank it up to about 26*.

I love your dynosheet
Very interesting. I run that kind of timing on my wife's car with the EJ207 but that thing is a different beast.

My question would be was there actually any power gained by running timing that high on your race map? I know you can get away with it on E85 but there comes a point where more timing doesn't add power.

I haven't seen much benefit going that high even on smaller turbos.
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Old 01-18-2013, 04:54 PM   #71
juanmedina
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Originally Posted by WRXt4cy View Post
Very interesting. I run that kind of timing on my wife's car with the EJ207 but that thing is a different beast.

My question would be was there actually any power gained by running timing that high on your race map? I know you can get away with it on E85 but there comes a point where more timing doesn't add power.

I haven't seen much benefit going that high even on smaller turbos.
Well.... has any other VF39 powered car trapped higher than mine? haha
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Old 01-18-2013, 05:09 PM   #72
Jdub.csu
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Quote:
Originally Posted by Wagz87subi View Post

Given these specs, just curious what the mpg is for a modded Sti like this??
I'm semi curious of this too
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Old 01-18-2013, 05:10 PM   #73
fourseasonsandles
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Awesome!

I run the same block on a stock location ATP3076r. I want to do e85, but I recall the RS Street block limitation was given at 600hp at the crank. Curious on your thoughts on that? Or do you not care?
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Old 01-18-2013, 05:26 PM   #74
Phatron
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I rarely run anything over 23-24* anymore on any setup, unless its asked to be pushed.

And I never said that this tune was conservative. I said that I dont consider anything making 500whp on a subaru conservative no matter how you slice it. We're just asking a ****load out of these things. But I said you if you compare the timing and AFR values to others that get thrown around that you could say its on the more conservative side of things. When it was at 480-500 he was saying it was "blah" so i turned it up...and it was already at 27-28psi, so the rest came from the timing.

Obviously the more power you make.....the less time the motor will last. Its pretty safe to say that if everything was perfect on the car (oiling, plugs, leaks) that it would last longer taking out 2psi and 2*. Alot of it comes down to keeping the oil fresh and being anal about watching the wideband for leaks.

I didnt want to run 28psi....i was going to stop at 26, but he had his mind set on 28.

As juan pointed out these cars can last lots of miles at the power levels and utlizing the timing, but you have to be anal about your car.
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Old 01-18-2013, 05:28 PM   #75
WRXt4cy
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Originally Posted by juanmedina View Post
Well.... has any other VF39 powered car trapped higher than mine? haha
Haha... point taken.

I made some really nice power on a stock turbo 04 STi last week. He is hoping to get down the 1/4 pretty quick with it but he's a bigger fella so that isn't going to help anything.

Sorry for getting off topic here OP. I am very impressed with your build and numbers. You've got my reconsidering the turbo selection for my '11 STi now. I'm really impressed with the spool and flat powerband.
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